/* Definitions of target machine for GNU compiler,
for 64 bit PowerPC linux.
- Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+ 2009, 2010 Free Software Foundation, Inc.
-This file is part of GNU CC.
+ This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+ GCC is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ GCC is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
-You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
-/* Yes! We are AIX! Err. Wait. We're Linux!. No, wait, we're a
- combo of both!*/
-#undef DEFAULT_ABI
-#define DEFAULT_ABI ABI_AIX
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
-#undef TARGET_AIX
-#define TARGET_AIX 1
+#ifndef RS6000_BI_ARCH
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT \
- (MASK_POWERPC | MASK_POWERPC64 | MASK_64BIT | MASK_NEW_MNEMONICS)
+#undef DEFAULT_ABI
+#define DEFAULT_ABI ABI_AIX
-#undef PROCESSOR_DEFAULT
-#define PROCESSOR_DEFAULT PROCESSOR_PPC630
-#undef PROCESSOR_DEFAULT64
-#define PROCESSOR_DEFAULT64 PROCESSOR_PPC630
+#undef TARGET_64BIT
+#define TARGET_64BIT 1
-#undef ASM_DEFAULT_SPEC
-#define ASM_DEFAULT_SPEC "-mppc64"
+#define DEFAULT_ARCH64_P 1
+#define RS6000_BI_ARCH_P 0
+#else
+
+#define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
+#define RS6000_BI_ARCH_P 1
+
+#endif
+
+#ifdef IN_LIBGCC2
+#undef TARGET_64BIT
+#ifdef __powerpc64__
+#define TARGET_64BIT 1
+#else
+#define TARGET_64BIT 0
+#endif
+#endif
+
+#undef TARGET_AIX
+#define TARGET_AIX TARGET_64BIT
+
+#ifdef HAVE_LD_NO_DOT_SYMS
+/* New ABI uses a local sym for the function entry point. */
+extern int dot_symbols;
+#undef DOT_SYMBOLS
+#define DOT_SYMBOLS dot_symbols
+#endif
+
+#define TARGET_PROFILE_KERNEL profile_kernel
+
+#define TARGET_USES_LINUX64_OPT 1
+#ifdef HAVE_LD_LARGE_TOC
+extern enum rs6000_cmodel cmodel;
+#undef TARGET_CMODEL
+#define TARGET_CMODEL cmodel
+#define SET_CMODEL(opt) cmodel = opt
+#else
+#define SET_CMODEL(opt) do {} while (0)
+#endif
+
+#undef PROCESSOR_DEFAULT
+#define PROCESSOR_DEFAULT PROCESSOR_POWER6
+#undef PROCESSOR_DEFAULT64
+#define PROCESSOR_DEFAULT64 PROCESSOR_POWER6
+
+/* We don't need to generate entries in .fixup, except when
+ -mrelocatable or -mrelocatable-lib is given. */
+#undef RELOCATABLE_NEEDS_FIXUP
+#define RELOCATABLE_NEEDS_FIXUP \
+ (target_flags & target_flags_explicit & MASK_RELOCATABLE)
+
+#undef RS6000_ABI_NAME
+#define RS6000_ABI_NAME "linux"
+
+#define INVALID_64BIT "-m%s not supported in this configuration"
+#define INVALID_32BIT INVALID_64BIT
+
+#undef SUBSUBTARGET_OVERRIDE_OPTIONS
+#define SUBSUBTARGET_OVERRIDE_OPTIONS \
+ do \
+ { \
+ if (!rs6000_explicit_options.alignment) \
+ rs6000_alignment_flags = MASK_ALIGN_NATURAL; \
+ if (TARGET_64BIT) \
+ { \
+ if (DEFAULT_ABI != ABI_AIX) \
+ { \
+ rs6000_current_abi = ABI_AIX; \
+ error (INVALID_64BIT, "call"); \
+ } \
+ dot_symbols = !strcmp (rs6000_abi_name, "aixdesc"); \
+ if (target_flags & MASK_RELOCATABLE) \
+ { \
+ target_flags &= ~MASK_RELOCATABLE; \
+ error (INVALID_64BIT, "relocatable"); \
+ } \
+ if (target_flags & MASK_EABI) \
+ { \
+ target_flags &= ~MASK_EABI; \
+ error (INVALID_64BIT, "eabi"); \
+ } \
+ if (TARGET_PROTOTYPE) \
+ { \
+ target_prototype = 0; \
+ error (INVALID_64BIT, "prototype"); \
+ } \
+ if ((target_flags & MASK_POWERPC64) == 0) \
+ { \
+ target_flags |= MASK_POWERPC64; \
+ error ("-m64 requires a PowerPC64 cpu"); \
+ } \
+ if ((target_flags_explicit & MASK_MINIMAL_TOC) != 0) \
+ { \
+ if (rs6000_explicit_options.cmodel \
+ && cmodel != CMODEL_SMALL) \
+ error ("-mcmodel incompatible with other toc options"); \
+ SET_CMODEL (CMODEL_SMALL); \
+ } \
+ else \
+ { \
+ if (!rs6000_explicit_options.cmodel) \
+ SET_CMODEL (CMODEL_MEDIUM); \
+ if (cmodel != CMODEL_SMALL) \
+ { \
+ TARGET_NO_FP_IN_TOC = 0; \
+ TARGET_NO_SUM_IN_TOC = 0; \
+ } \
+ } \
+ } \
+ else \
+ { \
+ if (!RS6000_BI_ARCH_P) \
+ error (INVALID_32BIT, "32"); \
+ if (TARGET_PROFILE_KERNEL) \
+ { \
+ TARGET_PROFILE_KERNEL = 0; \
+ error (INVALID_32BIT, "profile-kernel"); \
+ } \
+ if (rs6000_explicit_options.cmodel) \
+ { \
+ SET_CMODEL (CMODEL_SMALL); \
+ error (INVALID_32BIT, "cmodel"); \
+ } \
+ } \
+ } \
+ while (0)
+
+#ifdef RS6000_BI_ARCH
+
+#undef OVERRIDE_OPTIONS
+#define OVERRIDE_OPTIONS \
+ rs6000_override_options (((TARGET_DEFAULT ^ target_flags) & MASK_64BIT) \
+ ? (char *) 0 : TARGET_CPU_DEFAULT)
+
+#endif
+
+#undef ASM_DEFAULT_SPEC
#undef ASM_SPEC
-#define ASM_SPEC "%{.s: %{mregnames} %{mno-regnames}} \
-%{.S: %{mregnames} %{mno-regnames}} \
-%{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian} \
-%{v:-V} %{Qy:} %{!Qn:-Qy} -a64 %(asm_cpu) %{Wa,*:%*}"
+#undef LINK_OS_LINUX_SPEC
-/* 64-bit PowerPC Linux always has a TOC. */
-#undef TARGET_NO_TOC
-#define TARGET_NO_TOC 0
-#undef TARGET_TOC
-#define TARGET_TOC 1
+/* FIXME: This will quite possibly choose the wrong dynamic linker. */
+#undef LINK_OS_GNU_SPEC
+#define LINK_OS_GNU_SPEC LINK_OS_LINUX_SPEC
-/* We use glibc _mcount for profiling. */
-#define NO_PROFILE_COUNTERS 1
-#undef PROFILE_BEFORE_PROLOGUE
-
-/* Define this for kernel profiling, which just saves LR then calls
- _mcount without worrying about arg saves. The idea is to change
- the function prologue as little as possible as it isn't easy to
- account for arg save/restore code added just for _mcount. */
-/* #define PROFILE_KERNEL 1 */
-#if PROFILE_KERNEL
-#define PROFILE_BEFORE_PROLOGUE 1
-#undef PROFILE_HOOK
+#ifndef RS6000_BI_ARCH
+#define ASM_DEFAULT_SPEC "-mppc64"
+#define ASM_SPEC "%(asm_spec64) %(asm_spec_common)"
+#define LINK_OS_LINUX_SPEC "%(link_os_linux_spec64)"
+#else
+#if DEFAULT_ARCH64_P
+#define ASM_DEFAULT_SPEC "-mppc%{!m32:64}"
+#define ASM_SPEC "%{m32:%(asm_spec32)}%{!m32:%(asm_spec64)} %(asm_spec_common)"
+#define LINK_OS_LINUX_SPEC "%{m32:%(link_os_linux_spec32)}%{!m32:%(link_os_linux_spec64)}"
+#else
+#define ASM_DEFAULT_SPEC "-mppc%{m64:64}"
+#define ASM_SPEC "%{!m64:%(asm_spec32)}%{m64:%(asm_spec64)} %(asm_spec_common)"
+#define LINK_OS_LINUX_SPEC "%{!m64:%(link_os_linux_spec32)}%{m64:%(link_os_linux_spec64)}"
+#endif
+#endif
+
+#define ASM_SPEC32 "-a32 %{n} %{T} %{Ym,*} %{Yd,*} \
+%{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
+%{memb} %{!memb: %{msdata=eabi: -memb}} \
+%{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
+ %{mcall-freebsd: -mbig} \
+ %{mcall-i960-old: -mlittle} \
+ %{mcall-linux: -mbig} \
+ %{mcall-gnu: -mbig} \
+ %{mcall-netbsd: -mbig} \
+}}}}"
+
+#define ASM_SPEC64 "-a64"
+
+#define ASM_SPEC_COMMON "%(asm_cpu) \
+%{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}} \
+%{v:-V} %{Qy:} %{!Qn:-Qy} %{Wa,*:%*} \
+%{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}"
+
+#undef SUBSUBTARGET_EXTRA_SPECS
+#define SUBSUBTARGET_EXTRA_SPECS \
+ { "asm_spec_common", ASM_SPEC_COMMON }, \
+ { "asm_spec32", ASM_SPEC32 }, \
+ { "asm_spec64", ASM_SPEC64 }, \
+ { "link_os_linux_spec32", LINK_OS_LINUX_SPEC32 }, \
+ { "link_os_linux_spec64", LINK_OS_LINUX_SPEC64 },
+
+#undef MULTILIB_DEFAULTS
+#if DEFAULT_ARCH64_P
+#define MULTILIB_DEFAULTS { "m64" }
#else
-#define PROFILE_HOOK(LABEL) output_profile_hook (LABEL)
+#define MULTILIB_DEFAULTS { "m32" }
#endif
-/* We don't need to generate entries in .fixup. */
+#ifndef RS6000_BI_ARCH
+
+/* 64-bit PowerPC Linux is always big-endian. */
+#undef TARGET_LITTLE_ENDIAN
+#define TARGET_LITTLE_ENDIAN 0
+
+/* 64-bit PowerPC Linux always has a TOC. */
+#undef TARGET_TOC
+#define TARGET_TOC 1
+
+/* Some things from sysv4.h we don't do when 64 bit. */
+#undef TARGET_RELOCATABLE
+#define TARGET_RELOCATABLE 0
+#undef TARGET_EABI
+#define TARGET_EABI 0
+#undef TARGET_PROTOTYPE
+#define TARGET_PROTOTYPE 0
#undef RELOCATABLE_NEEDS_FIXUP
+#define RELOCATABLE_NEEDS_FIXUP 0
-#define USER_LABEL_PREFIX ""
+#endif
-/* AIX word-aligns FP doubles but doubleword-aligns 64-bit ints. */
+/* We use glibc _mcount for profiling. */
+#define NO_PROFILE_COUNTERS 1
+#define PROFILE_HOOK(LABEL) \
+ do { if (TARGET_64BIT) output_profile_hook (LABEL); } while (0)
+
+/* PowerPC64 Linux word-aligns FP doubles when -malign-power is given. */
#undef ADJUST_FIELD_ALIGN
#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
- (TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \
- ? get_inner_array_type (FIELD) \
- : TREE_TYPE (FIELD)) == DFmode \
- ? MIN ((COMPUTED), 32) : (COMPUTED))
-
-/* AIX increases natural record alignment to doubleword if the first
- field is an FP double while the FP fields remain word aligned. */
-#undef ROUND_TYPE_ALIGN
-#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
- ((TREE_CODE (STRUCT) == RECORD_TYPE \
- || TREE_CODE (STRUCT) == UNION_TYPE \
- || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
- && TYPE_FIELDS (STRUCT) != 0 \
- && DECL_MODE (TYPE_FIELDS (STRUCT)) == DFmode \
- ? MAX (MAX ((COMPUTED), (SPECIFIED)), 64) \
+ ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE) \
+ ? 128 \
+ : (TARGET_64BIT \
+ && TARGET_ALIGN_NATURAL == 0 \
+ && TYPE_MODE (strip_array_types (TREE_TYPE (FIELD))) == DFmode) \
+ ? MIN ((COMPUTED), 32) \
+ : (COMPUTED))
+
+/* PowerPC64 Linux increases natural record alignment to doubleword if
+ the first field is an FP double, only if in power alignment mode. */
+#undef ROUND_TYPE_ALIGN
+#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \
+ ((TARGET_64BIT \
+ && (TREE_CODE (STRUCT) == RECORD_TYPE \
+ || TREE_CODE (STRUCT) == UNION_TYPE \
+ || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \
+ && TARGET_ALIGN_NATURAL == 0) \
+ ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \
: MAX ((COMPUTED), (SPECIFIED)))
+/* Use the default for compiling target libs. */
+#ifdef IN_TARGET_LIBS
+#undef TARGET_ALIGN_NATURAL
+#define TARGET_ALIGN_NATURAL 1
+#endif
+
/* Indicate that jump tables go in the text section. */
#undef JUMP_TABLES_IN_TEXT_SECTION
-#define JUMP_TABLES_IN_TEXT_SECTION 1
-
-/* 64-bit PowerPC Linux always has GPR13 fixed. */
-#define FIXED_R13 1
+#define JUMP_TABLES_IN_TEXT_SECTION TARGET_64BIT
+
+/* The linux ppc64 ABI isn't explicit on whether aggregates smaller
+ than a doubleword should be padded upward or downward. You could
+ reasonably assume that they follow the normal rules for structure
+ layout treating the parameter area as any other block of memory,
+ then map the reg param area to registers. i.e. pad upward.
+ Setting both of the following defines results in this behavior.
+ Setting just the first one will result in aggregates that fit in a
+ doubleword being padded downward, and others being padded upward.
+ Not a bad idea as this results in struct { int x; } being passed
+ the same way as an int. */
+#define AGGREGATE_PADDING_FIXED TARGET_64BIT
+#define AGGREGATES_PAD_UPWARD_ALWAYS 0
+
+/* Specify padding for the last element of a block move between
+ registers and memory. FIRST is nonzero if this is the only
+ element. */
+#define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
+ (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE))
/* __throw will restore its own return address to be the same as the
return address of the function that the throw is being made to.
This is unfortunate, because we want to check the original
return address to see if we need to restore the TOC.
So we have to squirrel it away with this. */
-#define SETUP_FRAME_ADDRESSES() rs6000_aix_emit_builtin_unwind_init ()
-
-/* Don't assume anything about the header files. */
-#define NO_IMPLICIT_EXTERN_C
+#define SETUP_FRAME_ADDRESSES() \
+ do { if (TARGET_64BIT) rs6000_aix_emit_builtin_unwind_init (); } while (0)
/* Override svr4.h */
#undef MD_EXEC_PREFIX
#undef MD_STARTFILE_PREFIX
-#undef TARGET_OS_CPP_BUILTINS
-#define TARGET_OS_CPP_BUILTINS() \
- do \
- { \
- builtin_define ("__PPC__"); \
- builtin_define ("__PPC64__"); \
- builtin_define ("__powerpc__"); \
- builtin_define ("__powerpc64__"); \
- builtin_define ("__PIC__"); \
- builtin_define ("__ELF__"); \
- builtin_assert ("cpu=powerpc64"); \
- builtin_assert ("machine=powerpc64"); \
- } \
+/* Linux doesn't support saving and restoring 64-bit regs in a 32-bit
+ process. */
+#define OS_MISSING_POWERPC64 !TARGET_64BIT
+
+#define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
+
+/* glibc has float and long double forms of math functions. */
+#undef TARGET_C99_FUNCTIONS
+#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
+
+/* Whether we have sincos that follows the GNU extension. */
+#undef TARGET_HAS_SINCOS
+#define TARGET_HAS_SINCOS (OPTION_GLIBC)
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ if (TARGET_64BIT) \
+ { \
+ builtin_define ("__PPC__"); \
+ builtin_define ("__PPC64__"); \
+ builtin_define ("__powerpc__"); \
+ builtin_define ("__powerpc64__"); \
+ builtin_assert ("cpu=powerpc64"); \
+ builtin_assert ("machine=powerpc64"); \
+ } \
+ else \
+ { \
+ builtin_define_std ("PPC"); \
+ builtin_define_std ("powerpc"); \
+ builtin_assert ("cpu=powerpc"); \
+ builtin_assert ("machine=powerpc"); \
+ TARGET_OS_SYSV_CPP_BUILTINS (); \
+ } \
+ } \
while (0)
#undef CPP_OS_DEFAULT_SPEC
#undef LINK_OS_DEFAULT_SPEC
#define LINK_OS_DEFAULT_SPEC "%(link_os_linux)"
-#undef LINK_OS_LINUX_SPEC
-#define LINK_OS_LINUX_SPEC "-m elf64ppc %{!shared: %{!static: \
- %{rdynamic:-export-dynamic} \
- %{!dynamic-linker:-dynamic-linker /lib64/ld64.so.1}}}"
-
-#ifdef NATIVE_CROSS
-#define STARTFILE_PREFIX_SPEC "/usr/local/lib64/ /lib64/ /usr/lib64/"
+#define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
+#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
+#define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+#define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
+#if DEFAULT_LIBC == LIBC_UCLIBC
+#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
+#elif DEFAULT_LIBC == LIBC_GLIBC
+#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
+#else
+#error "Unsupported DEFAULT_LIBC"
#endif
+#define LINUX_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
+#define LINUX_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
-#undef STARTFILE_LINUX_SPEC
-#define STARTFILE_LINUX_SPEC "\
-%{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} crti.o%s \
-%{static:crtbeginT.o%s} \
-%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
-#undef ENDFILE_LINUX_SPEC
-#define ENDFILE_LINUX_SPEC "\
-%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
+#define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}}}"
+
+#define LINK_OS_LINUX_SPEC64 "-m elf64ppc %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+ %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}"
#undef TOC_SECTION_ASM_OP
-#define TOC_SECTION_ASM_OP "\t.section\t\".toc\",\"aw\""
+#define TOC_SECTION_ASM_OP \
+ (TARGET_64BIT \
+ ? "\t.section\t\".toc\",\"aw\"" \
+ : "\t.section\t\".got\",\"aw\"")
#undef MINIMAL_TOC_SECTION_ASM_OP
-#define MINIMAL_TOC_SECTION_ASM_OP "\t.section\t\".toc1\",\"aw\""
+#define MINIMAL_TOC_SECTION_ASM_OP \
+ (TARGET_64BIT \
+ ? "\t.section\t\".toc1\",\"aw\"" \
+ : ((TARGET_RELOCATABLE || flag_pic) \
+ ? "\t.section\t\".got2\",\"aw\"" \
+ : "\t.section\t\".got1\",\"aw\""))
#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (PowerPC64 GNU/Linux)");
/* Must be at least as big as our pointer type. */
-#undef SIZE_TYPE
-#define SIZE_TYPE "long unsigned int"
+#undef SIZE_TYPE
+#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
-#undef PTRDIFF_TYPE
-#define PTRDIFF_TYPE "long int"
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
-#undef WCHAR_TYPE
-#define WCHAR_TYPE "int"
+#undef WCHAR_TYPE
+#define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int")
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
/* PowerPC no-op instruction. */
#undef RS6000_CALL_GLUE
-#define RS6000_CALL_GLUE "nop"
+#define RS6000_CALL_GLUE (TARGET_64BIT ? "nop" : "cror 31,31,31")
#undef RS6000_MCOUNT
#define RS6000_MCOUNT "_mcount"
+#ifdef __powerpc64__
+/* _init and _fini functions are built from bits spread across many
+ object files, each potentially with a different TOC pointer. For
+ that reason, place a nop after the call so that the linker can
+ restore the TOC pointer if a TOC adjusting call stub is needed. */
+#if DOT_SYMBOLS
+#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
+ asm (SECTION_OP "\n" \
+" bl ." #FUNC "\n" \
+" nop\n" \
+" .previous");
+#else
+#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
+ asm (SECTION_OP "\n" \
+" bl " #FUNC "\n" \
+" nop\n" \
+" .previous");
+#endif
+#endif
+
/* FP save and restore routines. */
#undef SAVE_FP_PREFIX
-#define SAVE_FP_PREFIX "._savef"
+#define SAVE_FP_PREFIX (TARGET_64BIT ? "._savef" : "_savefpr_")
#undef SAVE_FP_SUFFIX
#define SAVE_FP_SUFFIX ""
#undef RESTORE_FP_PREFIX
-#define RESTORE_FP_PREFIX "._restf"
+#define RESTORE_FP_PREFIX (TARGET_64BIT ? "._restf" : "_restfpr_")
#undef RESTORE_FP_SUFFIX
#define RESTORE_FP_SUFFIX ""
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
-#undef TARGET_ENCODE_SECTION_INFO
-#define TARGET_ENCODE_SECTION_INFO rs6000_xcoff_encode_section_info
-
-/* This is how to output a reference to a user-level label named NAME.
- `assemble_name' uses this. */
-
-/* Override elfos.h definition. */
-#undef ASM_OUTPUT_LABELREF
-#define ASM_OUTPUT_LABELREF(FILE,NAME) \
-do { \
- const char *_name = NAME; \
- if (*_name == '@') \
- _name++; \
- \
- if (*_name == '*') \
- fprintf (FILE, "%s", _name + 1); \
- else \
- asm_fprintf (FILE, "%U%s", _name); \
-} while (0)
-
-#undef ASM_DECLARE_FUNCTION_NAME
-#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
- do \
- { \
- fputs ("\t.section\t\".opd\",\"aw\"\n\t.align 3\n", (FILE)); \
- ASM_OUTPUT_LABEL ((FILE), (NAME)); \
- fputs (DOUBLE_INT_ASM_OP, (FILE)); \
- putc ('.', (FILE)); \
- assemble_name ((FILE), (NAME)); \
- fputs (",.TOC.@tocbase,0\n\t.previous\n\t.size\t", (FILE)); \
- assemble_name ((FILE), (NAME)); \
- fputs (",24\n\t.type\t.", (FILE)); \
- assemble_name ((FILE), (NAME)); \
- fputs (",@function\n", (FILE)); \
- if (TREE_PUBLIC (DECL) && ! DECL_WEAK (DECL)) \
- { \
- fputs ("\t.globl\t.", (FILE)); \
- assemble_name ((FILE), (NAME)); \
- putc ('\n', (FILE)); \
- } \
- ASM_DECLARE_RESULT ((FILE), DECL_RESULT (DECL)); \
- putc ('.', (FILE)); \
- ASM_OUTPUT_LABEL ((FILE), (NAME)); \
- } \
- while (0)
-
/* This is how to declare the size of a function. */
#undef ASM_DECLARE_FUNCTION_SIZE
#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
{ \
if (!flag_inhibit_size_directive) \
{ \
- fputs ("\t.size\t.", (FILE)); \
- assemble_name ((FILE), (FNAME)); \
- fputs (",.-.", (FILE)); \
+ fputs ("\t.size\t", (FILE)); \
+ if (TARGET_64BIT && DOT_SYMBOLS) \
+ putc ('.', (FILE)); \
assemble_name ((FILE), (FNAME)); \
+ fputs (",.-", (FILE)); \
+ rs6000_output_function_entry (FILE, FNAME); \
putc ('\n', (FILE)); \
} \
} \
we also do this for floating-point constants. We actually can only
do this if the FP formats of the target and host machines are the
same, but we can't check that since not every file that uses
- GO_IF_LEGITIMATE_ADDRESS_P includes real.h. We also do this when
- we can write the entry into the TOC and the entry is not larger
- than a TOC entry. */
+ the macros includes real.h. We also do this when we can write the
+ entry into the TOC and the entry is not larger than a TOC entry. */
#undef ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
#define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE) \
|| (GET_CODE (X) == CONST_INT \
&& GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode)) \
|| (GET_CODE (X) == CONST_DOUBLE \
- && (TARGET_POWERPC64 \
- || TARGET_MINIMAL_TOC \
- || (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
- && ! TARGET_NO_FP_IN_TOC)))))
-
-/* This is the same as the dbxelf.h version, except that we need to
- use the function code label, not the function descriptor. */
-#undef ASM_OUTPUT_SOURCE_LINE
-#define ASM_OUTPUT_SOURCE_LINE(FILE, LINE) \
-do \
- { \
- static int sym_lineno = 1; \
- char temp[256]; \
- ASM_GENERATE_INTERNAL_LABEL (temp, "LM", sym_lineno); \
- fprintf (FILE, "\t.stabn 68,0,%d,", LINE); \
- assemble_name (FILE, temp); \
- fputs ("-.", FILE); \
- assemble_name (FILE, \
- XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0));\
- putc ('\n', FILE); \
- ASM_OUTPUT_INTERNAL_LABEL (FILE, "LM", sym_lineno); \
- sym_lineno += 1; \
- } \
-while (0)
-
-/* Similarly, we want the function code label here. */
-#define DBX_OUTPUT_BRAC(FILE, NAME, BRAC) \
- do \
- { \
- const char *flab; \
- fprintf (FILE, "%s%d,0,0,", ASM_STABN_OP, BRAC); \
- assemble_name (FILE, NAME); \
- putc ('-', FILE); \
- if (current_function_func_begin_label != NULL_TREE) \
- flab = IDENTIFIER_POINTER (current_function_func_begin_label); \
- else \
- { \
- putc ('.', FILE); \
- flab = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0); \
- } \
- assemble_name (FILE, flab); \
- putc ('\n', FILE); \
- } \
- while (0)
-
-#define DBX_OUTPUT_LBRAC(FILE, NAME) DBX_OUTPUT_BRAC (FILE, NAME, N_LBRAC)
-#define DBX_OUTPUT_RBRAC(FILE, NAME) DBX_OUTPUT_BRAC (FILE, NAME, N_RBRAC)
-
-/* Another case where we want the dot name. */
-#define DBX_OUTPUT_NFUN(FILE, LSCOPE, DECL) \
- do \
- { \
- fprintf (FILE, "%s\"\",%d,0,0,", ASM_STABS_OP, N_FUN); \
- assemble_name (FILE, LSCOPE); \
- fputs ("-.", FILE); \
- assemble_name (FILE, XSTR (XEXP (DECL_RTL (DECL), 0), 0)); \
- putc ('\n', FILE); \
- } \
- while (0)
-
-/* Override sysv4.h as these are ABI_V4 only. */
-#undef ASM_OUTPUT_REG_PUSH
-#undef ASM_OUTPUT_REG_POP
+ && ((TARGET_64BIT \
+ && (TARGET_MINIMAL_TOC \
+ || (SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
+ && ! TARGET_NO_FP_IN_TOC))) \
+ || (!TARGET_64BIT \
+ && !TARGET_NO_FP_IN_TOC \
+ && !TARGET_RELOCATABLE \
+ && SCALAR_FLOAT_MODE_P (GET_MODE (X)) \
+ && BITS_PER_WORD == HOST_BITS_PER_INT)))))
/* Select a format to encode pointers in exception handling data. CODE
is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
true if the symbol may be affected by dynamic relocations. */
#undef ASM_PREFERRED_EH_DATA_FORMAT
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
- (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_udata8)
+ ((TARGET_64BIT || flag_pic || TARGET_RELOCATABLE) \
+ ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel \
+ | (TARGET_64BIT ? DW_EH_PE_udata8 : DW_EH_PE_sdata4)) \
+ : DW_EH_PE_absptr)
+
+/* For backward compatibility, we must continue to use the AIX
+ structure return convention. */
+#undef DRAFT_V4_STRUCT_RET
+#define DRAFT_V4_STRUCT_RET (!TARGET_64BIT)
+
+#define TARGET_ASM_FILE_END rs6000_elf_end_indicate_exec_stack
+
+#define TARGET_POSIX_IO
+
+#define LINK_GCC_C_SEQUENCE_SPEC \
+ "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
+
+/* Use --as-needed -lgcc_s for eh support. */
+#ifdef HAVE_LD_AS_NEEDED
+#define USE_LD_AS_NEEDED 1
+#endif
+
+#define MD_UNWIND_SUPPORT "config/rs6000/linux-unwind.h"
+
+#ifdef TARGET_LIBC_PROVIDES_SSP
+/* ppc32 glibc provides __stack_chk_guard in -0x7008(2),
+ ppc64 glibc provides it at -0x7010(13). */
+#define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? -0x7010 : -0x7008)
+#endif
+
+#define POWERPC_LINUX
+
+/* ppc{32,64} linux has 128-bit long double support in glibc 2.4 and later. */
+#ifdef TARGET_DEFAULT_LONG_DOUBLE_128
+#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
+#endif
OSDN Git Service
